cl1 = 0.04;
cl2 = 0.01;
Point(1) = {0, 0, 0, cl1};
Point(2) = {2.2, 0, 0, cl1};
Point(3) = {2.2, 0.41, 0, cl1};
Point(4) = {0, 0.41, 0, cl1};
Point(5) = {0.21, 0.22, 0, cl2};
Point(6) = {0.21, 0.17, 0, cl2};
Point(7) = {0.21, 0.27, 0, cl2};
Line(1) = {1, 2};
Line(2) = {2, 3};
Line(3) = {3, 4};
Line(4) = {4, 1};
Circle(5) = {6, 5, 7};
Circle(6) = {7, 5, 6};
Line Loop(9) = {2, 3, 4, 1, -6, -5};
Plane Surface(9) = {9};
